Sanderson S.J. - Java: Java Programming For Beginners - A Simple Start to Java Programming

Java For Beginners

A Simple Start To Java Programming (Written By A Software Engineer)

Scott Sanderson

Table of Contents

Copyright 2016 by Globalized Healing, LLC - All rights reserved.

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Introduction

Java, the programming language, was introduced by Sun Microsystems. This work was initiated by James Gosling and the final version of Java was released in the year 1995. However, initially Java was released as a component of the core Sun Microsystem platform for Java called J2SE or Java 1.0. The latest release of Java or J2SE is Java Standard Version 6.

The rising popularity of Java, as a programming platform and language has led to the development of several tools and configurations, which are made keeping Java in mind. For instance, the J2ME and J2EE are two such configurations. The latest versions of Java are called Java SE and Java EE or Java ME instead of J2SE, J2EE and J2ME. The biggest advantage of using the Java platform is the fact that it allows you to run your code at any machine. So, you just need to write your code once and expect it to run everywhere.

As far as the features of Java are concerned, they are as follows:

• Object Oriented

In Java, everything is an object. Java can be effectively stretched out and extended to unimaginable dimensions since it is focused around the Object model.

• Independent of the platform

Dissimilar to numerous other programming dialects including C and C++, when Java is aggregated, it is not converted into a form, which is particular to any machine. Instead, it is converted into a machine-independent byte code. This byte code is conveyed over the web and deciphered by Virtual Machines or JVM on whichever stage it is generally run.

• Simple

Java is intended to be not difficult to learn. In the event that you comprehend the essential idea of OOP, Java would not be difficult to ace.

• Secure

With Java's security framework, it empowers to create frameworks, which are free of viruses and tampering. Public-key encryption is used as the core authentication strategy.

• Independent of Machine Architecture

Java compiler produces an object file format, which is independent of the architecture of the machine. The assembled code can be executed on numerous processors, with the single requirement that they must all have Java runtime framework.

• Portability

The fact that Java code is machine and platform independent makes it extremely compact. Compiler in Java is composed in ANSI C with a clean conveyability limit, which is a POSIX subset.

• Robustness

Java tries to kill circumstances, which can lead to potential system failures, by stressing chiefly on runtime checking and compile time checking.

• Support for Multithreaded Applications

With Java's multithreaded feature, it is conceivable to compose programs that can do numerous assignments at the same time. This configuration gimmick permits designers to build easily running intelligent applications.

• Interpreted Code

Java byte code is interpreted on the fly to local machine. The advancement methodology is more quick and expository since the interfacing is an incremental and lightweight process.

• High Performance

With the utilization of Just-In-Time compilers, Java enhances the performance of the system.

• Distributed

Java is intended for the conveyed environment of the web.

• Dynamic

Java is thought to be more dynamic than C or C++ since it is intended to adjust to an advancing environment. Java projects can convey broad measure of run-time data that can be utilized to check for accesses and respond to the same on run-time.

History of Java

James Gosling started working on the Java programming language in June 1991 for utilization in one of his numerous set-top box ventures. The programming language, at first, was called Oak. This name was kept after an oak tree that remained outside Gosling's office. This name was changed to the name Green and later renamed as Java, from a list of words, randomly picked from the dictionary.

Sun discharged the first open usage as Java 1.0 in 1995. It guaranteed Write Once, Run Anywhere (WORA), giving no-expense run-times on prominent stages. On 13 November 2006, Sun discharged much of Java as free and open source under the terms of the GNU General Public License (GPL). On 8 May 2007, Sun completed the procedure, making the greater part of Java's center code free and open-source, beside a little parcel of code to which Sun did not hold the copyright.

Pre-requisites

In order to run and experiment with the examples given in this book, you shall require a Pentium 200-Mhz machine with at least 64 MB of RAM. You additionally will require the accompanying programming platforms:

• Microsoft Notepad or Any Word Processor
• Java JDK 5
• Linux 7.1 or Windows XP or higher Operating Systems